The Ultimate Oversized Pump Cover?
The Gymshark x Cbum Hockey Jersey in Crimson Red, also available in Black, is one of the most talked-about pieces in the new “UNFINISHED” capsule collection by Chris Bumstead, the 6x Classic Physique Mr. Olympia champion. Designed with bodybuilding culture and oversized athletic fashion in mind, this jersey combines comfort, style, and functionality into a versatile piece of gym apparel.
Known for blending classic bodybuilding aesthetics with modern streetwear, Cbum helped create a jersey that works equally well for training sessions, warm-ups, recovery days, and casual everyday wear. With breathable mesh construction, heritage-inspired graphics, and a relaxed oversized fit, the Gymshark x Cbum Hockey Jersey delivers exactly what many fitness enthusiasts want from modern gym clothing.
Our team at Generation Iron HAD to get our hands on this.
First Impressions

The first thing that stood out to us about the Gymshark x Cbum Hockey Jersey is its oversized silhouette. The dropped shoulders and loose fit create a broader, more powerful appearance that complements muscular physiques extremely well.
Rather than focusing on compression or slim athletic fits like many other brands, this jersey embraces the growing trend of oversized gym wear and hockey-inspired streetwear, all to hide the physique underneath. The Crimson Red colorway gives the jersey a bold vintage sports aesthetic, while the Black version offers a more subtle and versatile look.
One of the best design details is the “06” graphic inspired by Cbum Olympia victories. It adds authenticity to the collaboration without making the jersey feel overbranded or flashy.
Fit and Sizing
The jersey features a fully oversized fit designed for comfort and layering.
Size & Fit
- Oversized fit
- Dropped shoulders
- Relaxed body design
- Model is 5’10” wearing size Medium
The relaxed structure makes this jersey ideal as a pump cover for bodybuilding workouts. It allows plenty of room through the chest, shoulders, and arms, helping lifters maintain mobility while still creating a strong silhouette.
Those who prefer tighter gym clothing may want to size down, but the oversized styling is intentional and is a major part of the jersey’s appeal.
This fit works especially well for:
- Bodybuilders
- Strength athletes
- Streetwear fans
- Oversized gym apparel enthusiasts
- Lifters looking for a comfortable warm-up layer
Comfort and Breathability
One of the strongest features of the Gymshark x Cbum Hockey Jersey is the lightweight breathable mesh construction.
Materials & Care
- 100% Polyester
- Lightweight breathable mesh
The polyester mesh helps airflow move easily through the jersey, preventing it from feeling too heavy during workouts or warm weather. Even though the jersey leans heavily into lifestyle fashion, it still performs surprisingly well in the gym. Long story short – this was an incredibly comfortable wear for our uses.
The loose fit combined with breathable fabric makes it comfortable for:
- Weight training
- Warm-ups
- Cardio sessions
- Post-workout wear
- Casual everyday use
Because of the oversized design, the jersey never feels restrictive, even during upper-body exercises or layered outfits.
Style and Versatility
The Gymshark x Cbum Hockey Jersey is one of those rare gym clothing pieces that transitions easily between training apparel and streetwear.
It can be worn:
- As a pump cover in the gym
- Over hoodies during colder months
- With joggers or shorts casually
- During recovery days
- For travel or daily wear
The hockey jersey inspiration gives it a unique look compared to traditional gym shirts and oversized tees. It feels athletic without looking overly technical, which is part of what makes the collection so appealing.
Cbum’s influence is easy to see throughout the design. The jersey captures the classic bodybuilding mentality while fitting perfectly into modern fitness fashion trends.
Build Quality
Gymshark has improved the quality of many of its premium collections over the years, and this collaboration feels more refined than some of the brand’s earlier releases.
The jersey feels lightweight without feeling cheap or like it’s going to tear, and the stitching and graphics appear durable enough for regular gym and casual wear.
While it is more lifestyle-focused than hardcore performance apparel, it still holds up well for training purposes and everyday use.
Product Details
- Lightweight breathable mesh
- Heritage-inspired graphic
- Oversized fit
- Available in Crimson Red and Black
Pros and Cons
Pros
- Comfortable oversized fit
- Excellent breathable mesh material
- Strong bodybuilding-inspired aesthetic
- Versatile for gym and casual wear
- Great pump cover option
- Unique hockey jersey styling
- Available in multiple colorways
Cons
- Oversized fit may not appeal to everyone
- More lifestyle-oriented than performance-focused
- Premium collaboration pricing
- Limited availability due to capsule collection release
Final Verdict
The Gymshark x Cbum Hockey Jersey is a strong addition to the growing oversized gym apparel trend. It successfully combines bodybuilding culture, hockey-inspired fashion, and everyday comfort into a stylish and wearable piece.
The Crimson Red version stands out thanks to its bold vintage-inspired appearance, while the Black version offers a cleaner and more understated look. Both colorways benefit from the relaxed fit, breathable mesh construction, and versatile styling options.
For fans of Cbum, bodybuilding aesthetics, or oversized gym fashion, this jersey is an easy recommendation. Whether you want a comfortable pump cover, a stylish casual piece, or simply a collectible collaboration item, the Gymshark x Cbum Hockey Jersey delivers on both style and comfort.
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